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    <title>get_image_channel_data_type</title>
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      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="get_image_channel_data_type"></a>
        <h1>get_image_channel_data_type</h1>
        <p>
            Return the channel data type.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="_top">int</a>


                    <strong class="fsfunc">                   
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="_top">image2d_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var><code>)</code></td>
              </td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="_top">int</a>


                    <strong class="fsfunc">                   
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="_top">image3d_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var><code>)</code></td>
              </td>
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      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
			Return the channel data type. Valid values are:</p>
        <div class="literallayout">
          <p><br />
CLK_SNORM_INT8<br />
CLK_SNORM_INT16<br />
CLK_UNORM_INT8<br />
CLK_UNORM_INT16<br />
CLK_UNORM_SHORT_565<br />
CLK_UNORM_SHORT_555<br />
CLK_UNORM_SHORT_101010<br />
CLK_SIGNED_INT8<br />
CLK_SIGNED_INT16<br />
CLK_SIGNED_INT32<br />
CLK_UNSIGNED_INT8<br />
CLK_UNSIGNED_INT16<br />
CLK_UNSIGNED_INT32<br />
CLK_HALF_FLOAT<br />
CLK_FLOAT</p>
        </div>
        <p>
		</p>
        <p>
		The CLK_ prefixes in the list above correspond to the CL_ prefixes used to describe the image channel order and data type in the tables for <a class="citerefentry" href="cl_image_format.html"><span class="citerefentry"><span class="refentrytitle">cl_image_format</span></span></a>. For example, both CL_UNORM_INT8 and CLK_UNORM_INT8 refer to an image channel data type that is an unnormalized unsigned 8-bit integer.
		</p>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
	  The following table describes the mapping of the number of channels of an image element to the appropriate components in the float4, int4 or unsigned int4 vector data type for the color values returned by <a class="citerefentry" href="readImage.html"><span class="citerefentry"><span class="refentrytitle">read_image{f|i|ui}</span></span></a> or supplied to <a class="citerefentry" href="writeImage.html"><span class="citerefentry"><span class="refentrytitle">write_image{f|i|ui}</span></span></a>. The unmapped components will be set to <code class="constant">0.0</code> for red, green and blue channels and will be set to <code class="constant">1.0</code> for the alpha channel.
		</p>
        <p>
		</p>
        <div class="informaltable">
          <table class="informaltable" border="1">
            <colgroup>
              <col align="center" class="col1" />
              <col align="center" class="col2" />
            </colgroup>
            <thead>
              <tr>
                <th align="center">Channel Order</th>
                <th align="center">float4, int4 or unsigned int4 components of channel data</th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td align="center">
                  <code class="constant">CL_R</code>
                </td>
                <td align="center">
                  <code class="constant">(r, 0.0, 0.0, 1.0)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_A</code>
                </td>
                <td align="center">
                  <code class="constant">(0.0, 0.0, 0.0, a)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_RG</code>
                </td>
                <td align="center">
                  <code class="constant">(r, g, 0.0, 1.0)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_RA</code>
                </td>
                <td align="center">
                  <code class="constant">(r, 0.0, 0.0, a)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_RGB</code>
                </td>
                <td align="center">
                  <code class="constant">(r, g, b, 1.0)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_RGBA, CL_BGRA, CL_ARGB</code>
                </td>
                <td align="center">
                  <code class="constant">(r, g, b, a)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_INTENSITY</code>
                </td>
                <td align="center">
                  <code class="constant">(I, I, I, I)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_LUMINANCE</code>
                </td>
                <td align="center">
                  <code class="constant">(L, L, L, 1.0)</code>
                </td>
              </tr>
            </tbody>
          </table>
        </div>
        <p>
		</p>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p>
            <img src="pdficon_small1.gif" />
                                                 
            <a href="http://www.khronos.org/registry/cl/specs/opencl-1.0.pdf#page=190" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="imageFunctions.html"><span class="citerefentry"><span class="refentrytitle">Image Functions</span></span></a> 
        </p>
      </div>
      <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2009 The Khronos Group Inc. 
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
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